Affiliation: | aDepartment of Maxillofacial Surgery, Floor 23, Tower Wing, King's College London Dental Institute at Guy's, King's College and St Thomas' Hospitals, Guy's Hospital, Great Maze Pond, London SE19RT, UK;bDepartment of Dentomaxillofacial Radiology, Floor 23, Tower Wing, King's College London Dental Institute at Guy's, King's College and St Thomas' Hospitals, Guy's Hospital, Great Maze Pond, London SE19RT, UK |